| Euclides - 1846
...at right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE** : Then, because AB is at right angles to the plane CK, therefore it makes right angles with every straight... | |
| John Playfair - 1847 - 317 páginas
...right angles to the plane CK Let any plane DE pass-through AB, and let CE be the common section ot **the planes DE, CK ; take any point F in CE, from which...draw FG in the plane DE at right angles to CE : And** because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight line... | |
| Samuel Hunter Christie - 1847
...plane MN. Let any plane DE pass through AB, and let CE be the common section of the planes DE, MN; **take any point F in CE, from which draw FG in the plane DE at right angles to CE** (I. 11). Because AB is perpendicular to the plane MN, therefore it is also perpendicular to every straight... | |
| Euclides - 1855
...angles to that plane. DEMONSTRATION. Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE** (a): and because AB is perpendicular to the plane CK, therefore it is also perpendicular to every straight... | |
| John Playfair - 1856 - 318 páginas
...right angles to the plane CK. Let any plane DE pass through AB, and let CE be the common section rf **the planes DE, CK ; take any point F in CE, from which draw FG in** ae plane DE at right angles to CE : And because AB is perpendicular to the plane CK, therefore it is... | |
| Eucleides - 1860
...plane. DEMONSTRATION. Let 3> G- A. & any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ; take any point F in CE, from...which draw FG, in the plane DE, at right angles to CE** (a) : and because AB is perpendicular to the plane CK, therefore it is also perpendicular to every... | |
| Robert Potts - 1864
...right angles to the plane CK. DGAH Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK; take any point F in CE, from...which draw FG in the plane DE at right angles to CE.** (I. 11.) And because AB is perpendicular to the plane CK, therefore it is also perpendicular to every... | |
| Alexander Kennedy Isbister - 1865
...angles to tne plane CK. CONSTRUCTION Let any plane DE pass through AB, and let CE be the common section **of the planes DE, CK ( take any point F in CE, from...which draw FG in the plane DE at right angles to CE.** (i. 11.) DEMONSTRATION And because AB is perpendicular to the plane CK, therefore it is also perpendicular... | |
| Euclid, Isaac Todhunter - 1867 - 400 páginas
...B Let any plane DE pass through AB, and let CE be the common section of the planes DE, CK; [XI. 3. **^take any point F in ' CE, from which draw FG, in the plane DE, at right angles to CE.** [I. 11. Then, because AB is at right angles to the plane CK, [Hypothesis. therefore it makes right... | |
| Euclid, Isaac Todhunter - 1867 - 400 páginas
...CK. H Let any pkne DE pa*= through AB, and let CE be the common section of the planes DE, CK; [XI. 3. **take any point F in CE, from which draw FG, in the plane DE, at right angles to CE.** [I. 11. Then, because AB is at right angles to the plane CK, [Hypothesis. therefore it makes right... | |
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